Studies on metallurgical and corrosion characteristics of dissimilar GTAW welding of alloy 800 and SS316L using multicomponent activated flux

2021 ◽  
Author(s):  
Nilakantha Sahu ◽  
Birendra Ku. Barik ◽  
Subhadra Sahoo ◽  
Sushant Ku. Badjena ◽  
Santosh Ku. Sahoo
Keyword(s):  
Alloy 800 ◽  
Activated Flux

Influence of activated flux on weld bead hardness of MIG welded austenitic stainless steel

2021 ◽  
Author(s):  
Abhishek Chakraborty ◽  
Chaitanya Sharma ◽  
Sandeep Rathee ◽  
Manu Srivastava
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Weld Bead ◽  
Activated Flux

pH Effect on Sulfur-Induced Passivity Degradation of Alloy 800 in Simulated Crevice Chemistries

2014 ◽  
Vol 161 (4) ◽  
pp. C201-C214 ◽  
Author(s):  
Da-Hai Xia ◽  
Ren-Kang Zhu ◽  
Yashar Behnamian ◽  
Chen Shen ◽  
Jing-Li Luo ◽  
...  
Keyword(s):  
Ph Effect ◽  
Alloy 800

Thermally activated flux creep velocity in Hg0.69Pb0.31Ba2Ca2Cu3O8+δ

1997 ◽  
Vol 282-287 ◽  
pp. 2367-2368 ◽  
Author(s):  
C.C. Lam ◽  
X. Jin ◽  
K.C. Hung ◽  
H.M. Shao
Keyword(s):  
Flux Creep ◽  
Thermally Activated ◽  
Activated Flux ◽  
Creep Velocity

ANISOTROPIC VORTEX DYNAMICS AND PHASE DIAGRAM OF YBa2Cu3O7 SINGLE CRYSTALS WITH CANTED COLUMNAR DEFECTS

1996 ◽  
Vol 10 (22) ◽  
pp. 2723-2743 ◽  
Author(s):  
D. S. REED ◽  
N.-C. YEH ◽  
W. JIANG ◽  
U. KRIPLANI ◽  
M. KONCZYKOWSKI ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Magnetic Fields ◽  
Vortex Dynamics ◽  
Flow Model ◽  
Flux Flow ◽  
Thermally Activated ◽  
Liquid Transition ◽  
Columnar Defects ◽  
Thermally Activated Flux Flow ◽  
Activated Flux

The anisotropic vortex dynamics and phase diagram are determined for a YBa 2 Cu 3 O 7 single crystal with columnar defects oriented at ±7.5° relative to the crystalline c-axis. A second-order splayed-glass to vortex-liquid transition is manifested for magnetic fields nearly parallel to the columns via the critical scaling of vortex AC and DC transport properties. In contrast, for magnetic fields aligned close to the ab-plane, an XY-like vortex-glass transition prevails. For magnetic fields at intermediate angles, there is no evidence of any vortex phase transition, and the vortex dynamics is described in terms of the thermally activated flux flow model.

Effects of Fe3O4 Nano Particles Addition in High Temperature Superconductor YBa2Cu3O7-δ

2012 ◽  
Vol 501 ◽  
pp. 309-313 ◽  
Author(s):  
Siti Nurdalila Abd-Ghani ◽  
Roslan Abd-Shukor ◽  
Wei Kong
Keyword(s):  
Transport Properties ◽  
Solid State Reaction Method ◽  
Nano Particles ◽  
Magnetic Impurities ◽  
Oxide Powders ◽  
Nano Fe3o4 ◽  
Activated Flux ◽  
Average Size ◽  
Increasing Temperature ◽  
Magnetic Nano Particles

The effects of nano particles Fe3O4 addition on the superconducting and transport properties of YBa2Cu3O7-δ (YBCO) were studied. YBa2Cu3O7-δ superconductor powders were prepared by using high purity oxide powders via solid state reaction method. Nano Fe3O4 with 0.01 – 0.05 wt.% with average size 28 nm was added into YBCO. The transition temperatures (Tc) of the samples were measured by using four point probe method. The critical current (Ic) of the samples has been determined by using the 1 μV/cm criterion from 30 – 77 K. Sample with 0.02 wt.% nano Fe3O4 showed the highest Tc at 87 K. It is interesting to note the same sample also exhibited the highest Jc at 77 K up to 1683 mA/cm2. Nano Fe3O4 has acted as effective flux pinning centers in YBCO. A small amount of nano particles Fe3O4 addition has successfully improved the superconducting and transport properties of YBCO. The excessive addition of nano Fe3O4 (> 0.02 wt.%) suppressed the Tc and Jc. Overall, Jc decreases with increasing temperature (30 – 77 K) as a consequence of thermally activated flux creep. Magnetic impurities normally suppress superconductivity. However, by adding magnetic nano particles, current carrying capacity of superconductors YBCO was enhanced significantly.

Sign in / Sign up

Export Citation Format

Share Document